[Pseudomonas aeruginosa contamination of disinfectant solutions from central disinfectant dispensing devices in swimming pools].

The disinfectant solutions from central dosing operators in swimming-bathes were microbiologically tested. The disinfectant solutions in all but one of the tested swimming-bathes showed a microbial colonization. The number of colonies ranged to 3 X 10(5) Col/ml and in 11 of the 24 tested bathes Pseudomonas aeruginosa could be isolated from the disinfectant solutions. Especially the occurrence of P. aeruginosa is quite unfavourable. Due to the results special restorations seem to be necessary.